GR5 Titanium Plate
The world's most widely used titanium alloy: ≥895 MPa tensile strength at 4.43 g/cm³ — 45% lighter than steel, corrosion-resistant, and heat-treatable to 400°C. ASTM B265 in stock, 0.5–75mm. ASTM B265 + EN 10204 3.1 MTC.
Available Dimensions & Stock
Most titanium alloy suppliers quote 4–6 weeks for GR5 production. ProX Metal keeps an active rolling inventory of ASTM B265 GR5 titanium plate on the floor — organized by thickness, heat number, and ready to ship. Below is the actual stock snapshot from our Baoji warehouse (updated July 2026).
Stock by Thickness
| Thickness | Total Pieces | Total Weight | Batches | Typical Uses | Most Available Specs in This Range |
|---|---|---|---|---|---|
| 0.5 – 1.0 mm | 174 pcs | 1.09 MT | 6 | Shims, thin formed parts, brackets | 0.8 × 1000 × 2000 mm — 69 pcs / 512.6 kg |
| 1.1 – 2.0 mm | 2 pcs | 0.02 MT | 1 | Light cladding, spacer plates | — |
| 3.1 – 5.0 mm | 104 pcs | 3.51 MT | 8 | Structural brackets, pressure vessel fittings | 3.5 × 1000 × 2000 mm — 85 pcs / 2,682.6 kg 5.0 × 1000 × 2000 mm — 14 pcs / 646.3 kg |
| 5.1 – 8.0 mm | 21 pcs | 1.50 MT | 4 | Flanges, heavy brackets, machine bases | 6.0 × 1000 × 2000 mm — 16 pcs / 944.0 kg |
| 8.1 – 12 mm | 5 pcs | 0.49 MT | 1 | Thick structural plates, tool bodies | 10.5 × 1000 × 2000 mm — 5 pcs / 492.7 kg |
| 12.1 – 16 mm | 12 pcs | 1.70 MT | 4 | Heavy-duty machine parts, tooling | 15 × 1000 × 2000 mm — 6 pcs / 826.2 kg 16 × 1000 × 2000 mm — 5 pcs / 729.0 kg |
| 16.1 – 25 mm | 5 pcs | 0.95 MT | 2 | Thick blocks, tooling, marine hardware | 20 × 1000 × 2000 mm — 3 pcs / 547.0 kg |
What Makes GR5 Different
GR5 is not the cheapest titanium alloy. It's not the most corrosion-resistant. It's not the strongest in absolute terms. So why does it account for over 50% of all titanium used worldwide? Because no other metal — titanium or otherwise — delivers this combination of properties in one material.
High Strength
≥895 MPa UTS, ≥828 MPa yield in the annealed condition — comparable to many alloy steels at nearly half the weight. Through STA heat treatment (sections ≤25mm), strength can be pushed above 1,100 MPa for aerospace-grade fasteners and racing components.
Lightweight
At 4.43 g/cm³, GR5 is 45% lighter than steel and only ~60% heavier than aluminum — but with 3× the strength of 6061-T6. For every kilogram you switch from steel to GR5, you save 0.44 kg without sacrificing load capacity.
Corrosion Resistance
Near-immune to seawater, chlorides, oxidizing acids, and most industrial chemical environments. No pitting, no crevice corrosion, no stress corrosion cracking in chloride media. Zero coating or cathodic protection required — service life measured in decades, not years.
The α+β Advantage
GR5 is an alpha-beta (α+β) alloy. The 6% aluminum stabilizes the alpha phase (strength at temperature), while the 4% vanadium stabilizes the beta phase (formability and heat treatability). This dual-phase structure is what gives GR5 its signature balance — strong enough to replace steel, formable enough to be machined into complex shapes, and heat-treatable to push properties even further for sections up to 25mm.
In plain terms: commercially pure titanium (GR1–GR4) gives you corrosion resistance. GR5 gives you corrosion resistance plus structural strength.
GR5 vs Steel vs Aluminum — The Engineering Choice
When engineers spec GR5, they're usually deciding between three options: make it from steel (strong but heavy), make it from aluminum (light but weak at temperature), or make it from titanium. Here's how the numbers break down.
| Property | GR5 Titanium | 4340 Alloy Steel | 7075-T6 Aluminum |
|---|---|---|---|
| Density | 4.43 g/cm³ | 7.85 g/cm³ | 2.81 g/cm³ |
| Tensile Strength (UTS) | ≥895 MPa | ~1,725 MPa (Q&T) | 572 MPa |
| Yield Strength | ≥828 MPa | ~1,550 MPa | 503 MPa |
| Specific Strength (Strength/Weight) | ~202 kN·m/kg | ~220 kN·m/kg | ~204 kN·m/kg |
| Stiffness (Young's Modulus) | 114 GPa | ~205 GPa | 72 GPa |
| Fatigue Limit | 500-600 MPa | 500-650 MPa | 150-200 MPa |
| Max Service Temperature | ~400°C | ~430°C | <150°C |
| Seawater Corrosion | Immune — zero pitting | Requires coating/sacrificial anodes | Pitting and exfoliation in chlorides |
| Magnetic Signature | Non-magnetic | Magnetic | Non-magnetic |
| Weldability | GTAW with inert gas shield | Excellent — all methods | Limited — HAZ strength loss |
Applications — Three Worlds, One Alloy
GR5 titanium plate doesn't serve one industry. It serves three distinct engineering worlds — each with its own performance language. Racing talks in grams and lap times. Chemical processing talks in years of corrosion-free service. Sports talks in feel, flex, and fatigue life. GR5 speaks all three.
🏁 Motorsport & Racing
"When every gram costs a lap time."- Exhaust headers & mufflers — 60% lighter than stainless, survives 350°C+
- Suspension springs & wishbones — 40% lighter than steel, higher fatigue life
- Connecting rods & valve retainers — reduced reciprocating mass = higher RPM
- Brake caliper brackets & rotor hats — lower thermal conductivity prevents fluid boil
- GR5 fasteners throughout — the "gram strategy" that adds up to seconds
⚙ Industrial & Chemical Equipment
"When corrosion resistance needs structural strength."- Heat exchanger plates & tube sheets — immune to chloride pitting, handles 400°C
- Pressure vessel shells & heads — thinner walls vs steel = lighter vessel + more capacity
- Chemical reactor internals — agitators, baffles, support grids for aggressive media
- Flue gas desulfurization (FGD) components — outperforms 316L and duplex in acidic condensate
- Desalination & brine processing — zero corrosion allowance design cuts material cost
🏌 Sports & Performance Equipment
"When feel matters as much as strength."- Bicycle frames & components — the stiffness-to-weight sweet spot for road, MTB, and track
- Golf club heads & face inserts — high strength-to-weight enables thinner, faster faces
- Racing motorcycle rear shock springs — 40% weight reduction vs steel, adjustable stiffness
- Mountaineering & climbing hardware — carabiners, ice screws, crampons at minimal weight
- Tennis & badminton racquet frames — titanium mesh for larger sweet spot with reduced weight
Technical Specifications
Chemical Composition (ASTM B265)
| Element | Ti | Al | V | Fe | O | C | N | H |
|---|---|---|---|---|---|---|---|---|
| Range (wt%) | Balance | 5.50–6.75 | 3.50–4.50 | ≤0.40 | ≤0.20 | ≤0.08 | ≤0.05 | ≤0.015 |
| Metallurgical Role | Base — α+β matrix | α stabilizer — strength at temperature | β stabilizer — formability, heat treatability | Impurity — controlled for ductility | Interstitial strengthener — tightly controlled | Impurity — carbide former | Impurity — embrittlement risk | Impurity — hydride embrittlement risk |
Mechanical Properties (Annealed Condition, per ASTM B265)
| Property | Minimum Value | Typical Range (Annealed) | STA Condition (≤25mm) |
|---|---|---|---|
| Tensile Strength (UTS) | ≥895 MPa (130 ksi) | 930–965 MPa | Up to 1,100 MPa |
| Yield Strength (0.2% Offset) | ≥828 MPa (120 ksi) | 860–930 MPa | Up to 1,000 MPa |
| Elongation | ≥10% (in 4D) | 12–15% | 8–10% |
| Reduction of Area | ≥20% | 25–35% | — |
| Hardness | — | 30–36 HRC / 320–360 HB | Up to 40+ HRC |
| Elastic Modulus | — | ~114 GPa | — |
| Fatigue Limit (10⁷ cycles) | — | 500–600 MPa | — |
Physical Properties
| Property | Value | Notes |
|---|---|---|
| Density | 4.43 g/cm³ | ~56% of steel, ~60% heavier than aluminum |
| Melting Range | 1,604–1,660°C | Liquidus to solidus |
| Thermal Conductivity | ~6.7 W/(m·K) | Low — affects machining strategy |
| Coefficient of Thermal Expansion | 8.6 × 10⁻⁶ /°C | 20–100°C range |
| Electrical Resistivity | ~1.7 µΩ·m | Relatively high |
| Beta Transus Temperature | ~995°C | α→β phase transformation |
Welding GR5 — Critical Rules
| Rule | Requirement | Why It Matters |
|---|---|---|
| 1. Filler Metal | ERTi-5 (Ti-6Al-4V) ONLY | ERTi-2 (CP Ti) filler dilutes Al and V in the weld pool, creating a weaker joint. Do NOT use commercially pure filler on GR5. |
| 2. Shielding | Argon — torch + trailing shield + back purge | GR5 at welding temperature absorbs O₂, N₂, and H₂ aggressively. Any exposure to air during cooling = embrittled weld. Trailing shield and back purge are non-negotiable. |
| 3. Post-Weld Treatment | Stress relief at 480–650°C / 1–4 hrs | Reduces residual welding stress. For STA material, full re-solution treatment may be required to restore strength in the HAZ. |
Cut-to-Size & Precision Cutting Services
We don't just sell plate. We prepare material to your exact dimensions so it goes straight to your CNC, welding station, or assembly line — no in-house cutting, no scrap to manage, no extra handling.
GR5 alloy plate follows the same production route as commercially pure titanium at ProX Metal: vacuum arc remelting (VAR) → forging → single-plate hot rolling → annealing → pickling → inspection. Unlike CP titanium (GR1/GR2) which is often coil-processed for high-volume slitting and cut-to-length, GR5 is rolled as individual plates — giving us the flexibility to produce to your exact target thickness, width, and length from the start.
When standard stock dimensions don't match your requirements, tell us what you need. We offer the following cutting services on finished plate — and we'll recommend the right method based on your thickness, tolerance, and part geometry.
Shear Cutting
Hydraulic guillotine shear — the fastest, most cost-effective route for straight cuts on thin GR5. Ideal for rectangular blanks, gasket rings, and strip parts. Typical tolerance: ±0.5mm. Send us your cut list — we'll shear and ship.
Laser Cutting
Fiber laser with nitrogen assist — ±0.1mm precision with clean edges and minimal HAZ. The go-to for intricate profiles, mounting brackets, and parts that go directly into assembly. Send your DXF/DWG — we'll laser-cut to print.
Waterjet Cutting
High-pressure abrasive waterjet — cold cutting with zero HAZ, no microstructural change, no edge hardening. The preferred method for thick GR5 where material integrity at the cut edge matters. Tell us your thickness — we'll waterjet to spec.
Wire EDM (Precision)
±0.005mm precision regardless of plate thickness. The definitive choice when dimensional accuracy is non-negotiable — aerospace brackets, medical device blanks, racing engine internals. Send your tolerance callouts — we'll EDM to your spec.
Why ProX Metal for GR5
GR5 is the most competitive titanium grade in the world — every mill makes it. So why source from ProX Metal? Three reasons that matter when your reputation depends on material quality.
Baoji Supply Chain — Direct
ProX Metal operates inside Baoji's titanium ecosystem — the "Titanium Valley" that produces over 60% of China's titanium. Raw sponge to finished plate happens within a 50km radius. No middlemen, no trader markups, no supply chain opacity. You're buying from the source.
Full Traceability — EN 10204 3.1 Standard
Every GR5 plate ships with an EN 10204 3.1 Material Test Certificate showing actual chemistry (not just "pass/fail") and mechanical test results from that specific heat. 3.2 certification (TUV/SGS/BV/Lloyd's witnessed) available on request. 100% ultrasonic testing for plates ≥10mm.
Cut-to-Size — Ready for Your Machine
Don't pay for material you'll scrap. We cut to your exact dimensions — shear, laser, waterjet, or wire EDM — and ship parts that go straight to your CNC or welding station.
Quality Infrastructure
| Capability | Details |
|---|---|
| Certifications | ISO 9001:2015 • ASTM B265 • ASME SB-265 • AMS 4911 • AMS 4928 |
| MTC Standard | EN 10204 3.1 (standard) • 3.2 by TUV/SGS/BV/Lloyd's (on request) |
| NDT | 100% Ultrasonic Testing for plates ≥10mm per ASTM B265 • PMI on request |
| Surface Finish | Annealed + Pickled (standard) • Cold Rolled Bright • Sandblasted • Polished |
| Condition | Mill Annealed (standard) • Solution Treated + Aged (on request, ≤25mm) |
| Packaging | Seaworthy plywood cases with VCI interleaving • Vacuum sealing for marine shipments |
Frequently Asked Questions
Ready to Spec GR5?
Send us your drawing, thickness, and quantity. We'll quote within 24 hours — with MTC, processing, and shipping to your door.
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